* {
    margin: 0;
    padding: 0;
    line-height: 22px;
    font-family: "Arial", "微软雅黑";
}

#chat {
    margin: 3px auto 0 auto;
    width: 436px;
    border: 1px #999999 solid;
}

.chatBody {
    width: 100%;
    height: 220px;
    overflow: auto;
}

.chatText {
    border: none;
    width: 100%;
    height: 50px;
}

.btn {
    text-align: right;
}

.btn span {
    display: inline-block;
    padding: 0 10px;
    height: 25px;
    overflow: hidden;
    color: #ffffff;
    border-radius: 5px;
    background-color: #069dd5;
    font-size: 12px;
    margin-right: 3px;
    cursor: pointer;
}
.msg{
    position: relative;
    padding: 10px 10px 10px 40px;
    width: 100%;
    box-sizing: border-box;
}
.msg img{
    position: absolute;
    left: 0;
    top: 10px
}
.msg p{
    color: blue;
}
.msg p:last-child{
    color: #444;
    background-color: #efefef;
    padding: 5px 10px ;
    border-radius: 5px;
}